Spectra Precision Survey Pro v4.5 Recon and Nomad Reference Manual - Manual (Page 163)

Survey Menu
R-155
The Enter Shot Data Screen
Horizontal Angle: displays the horizontal angle
measured by the total station. This value is updated
with the Take Shot button, described below.
Current Date / Time: displays the current date, time,
and DUT. These settings can be changed from the
Date/Time Settings screen (Page R-52).
Date: if incorrect, the current date should be entered
here.
Time: is where the precise time that the observation
occurred is entered.
Hrs to GMT: is the number of hours that the time at the
current location differs from Greenwich Mean Time.
Note: The hours to GMT will be between +5 and +8
when in the continental United States.
Take Shot : records the horizontal angle from the total station.
Get Local Time : fills in the Time field with the current time that is
set in the data collector. This function is not available when shooting
the backsight.
Sun Shot Procedure Summary
1. Point the telescope ahead of the path of the sun and lock the
horizontal movement of the total station.
2. Immediately record the horizontal angle from the total station
using the Take Shot button.
3. When the target becomes properly aligned with the crosshairs,
record the current time as accurately as possible. The time can
be automatically read from the data collector using the
Get Local Time button, or measured from an external time piece
and manually entered in the appropriate fields.